Engine-starter.



0. JgsPoHRER.y ENGINE STARTER.

APPLICATION FILED MAR. 19, 1912.

Patented Mar. 18, 1913.

whisk W12? e prmiting z of hhs samuel Reference to be had ing drawings,forming): u

time main@ ware enfra@ may Vizi usc.

' ing bloclrl A26 tzzxrnyfing a transversely-disposed' pin 27 extendingbeyond opposite vsides of the block and into the alined slots in theopposite sides of said cylinder.

'It will be seen by the above-outlined construction, that arotation ofthe spurv Wheel 21 or the actuation of the shaft 22 by a hand-wheel,Will rotate the cylinder 24 and should the block 26 vbe held fromrotation,

l' io sueha movement would advance s aid block. This block 26 is'held infrictional engagement with the casing 10 by means of a friction ring 28(see Fig. 3), which friction ring is held to the casing 10 by means of ascrew 29. This friction ring being split at 30 and sprung out of itsnormal ,circurrn ference will have a tendency to grip the slid-l ingblock 26, and, as shown 1n Fig.v 3, av

bearing ring 31' is disposed between the friction ring and-theforwardlyfprojecting portion Aof the sliding block 26. A slidingkey-Sghennects this bearing ring with the sliding'fblock 26.

Threaded into the outer end of theslid' ing. block 26 and in atrialalinement with the spur wheel 2 1 and shaft 22, is a stub shaft 33 landa clutch member 34, thecoacting portion 35 of which clutch-is connectedto the `engine shaft 36. The teeth on the clutch are so arranged thatwhen the device is turned through `the actuation of the engine itself,the two parts of the clutch. are disconnected, the incline of the teethforcing on the actuation ofthe spur Wheel 21 and its the clutch member34 and its attached sliding block 26 back into the cylinder 24, but-.attached parts, the sliding block 26 is forced forward' bringing theclutch members into .reprint rang ent. of a valve controlled by the oengagement. As is common with devices of this character, the actuatingiuid is admitted through the inlet 8,to act on the head 11,-

outlet 39 is controlled bythe valve 40, the

"i a groove 42 cut in the upper siA e ofthe pis-'- ton stem end of' thestem 41' of which is )sitioned` in f This valve is maintained in 'j' bymeans of aV compression caring ther-sonav While this arsition 'theactuating `piston' stem is is- 'closed rssmyjapplicatipn, SerialBT05635930 file' Junel 11,1911, the advantage of this hammam-11a in ai@fait that the-groeve nal position to be actuated stroke, and for thispurpose there is mountend engaging the bottom of 42 can be easily milledin the stern and elimi-l nates/the separate track arrangementheretofore-'disposed ou top of the piston stein, thereby forming apiston stem of one piece.

In order to form a combined inuiler and exhaust', the head 9 and thecasiuglO may beinade integral and have a projecting band 44 telescopingund in threaded engage` ment i'vlth one end of the cylinder (i. A seriesof outlet apertures 45 are extended through the cylinder 6 within theband 44 and are 'so positioned relative to the adjacent end of thecylinder that the actuating fluid ivhich has passed through the inlet 8.to act on the back of the piston head 11, also acts through the.by-pass formed by the'ap-v ertures 45, passageways 46 and apertures 47,through the opening 12 into the casing 10, and through the opening 13 tothe outside atmosphere. In this way, it will be seen that when thepiston head 11 has reached the v.position between the apertures 45 and4i', the actuating fluid in the cylinder fwill pass .throu h the casing10, which acts as a mufiier, be ore it is passed to `theoutside-atmosphere. Atthe same time, the valve stem 41 having reachedthe depressed portion of the groove 42V adjacent the piston head,permits the actuation of the spring '43 to strop the passage of theactuating fluid through lthe outlet 39'and inlet 8. 'This balancing otHuid pressure on. opposite sides' of the piston head 11,' ivilhofcourse, actasV a cushion to the piston, but as a further precaution, acircular 'buiiino' ring'48 may be vcarriedv b the head 9 pro]ecting intothe cylinder 6 an disposed about the'opening 12.

i As ,is usual with devices of this character, the 'actuation ofi the-stem .14 Winds a spring Whieh'returnsthe piston toifits origion thenext edl upon the shaft'22, a. gear Wheel 49, which gear Wheel ispermanently vin meshv'with 4the teeth ,of the rack 15 and has attachedthereto oneend of a coil spring 50, the" opposite outer end o which igsuitably attached by.' means of. a pin 51, with some por-- tio-n of thecasing 10.v By this construction, it vwill he seen that the actuation ofthe stern 14 places the spring 50 under tension, so

that When'the rack is free to move baclr'to its originalpositionadjacent the inlet 8, the l spring will operateto so move it.

Having thus described my' invention, I claim as new and desire to secureby Letters Patent:

i. In `an engine 'starter,.a gear Wheel having a cylinder projectingfrom one side thereof, said cylinder having elongateddiagonally-disposed apertures. in op osite sides, a block slidablymounted in sai cylinder, a clutch member carried by said block,y

saidblock having a pin extending `from `op` pcsite sides thereof anddisposed 1n saidapwheel will advance said clutch member.

vhlOCk slidahly mounted in said cylinder, a

ting the passage of Huid from the rear of said piston'to the oppositeface When the 15 latter has reached the limit of its actuating stroke,said by-pass leading into said casing, said casing accingas a ninler.

ulutch melnbei vcarried by Said block, means In testimony whereof havesigned my for advancing said block on the rotation of lt naine to thisspecification in the presence of 20 said cylinder, and a frctionbandengaging two suhsmibing witnesses. y said block to yetard therotationoi: the same. f GREGOhY JOHN SPOHRER. Y ln an engnie starter, acylinder, a gear Casing forming one. head thereof, a piston l mountedinA said cylinder and extending l l thrnugh said casing, and a bypasspermitertulcs, and means frictionally holding said block whereby therotation of said gear In an en ine staiter a 0 lindei a Witnesses:

Homin l. BLAIR, J. A. HILLIARD.

